Vacuum-generator.



J. A. NHTSCH.

VACUUM GENERATOR.

APPLICATION FILED N0v.16. 1911.

1,206,1 26. m6111611 Nov. 28, 1916.

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speeication of Letters Patent. Patented Nov. 28, 19,16.

Application filed. November 16, 1911. Serial No. 660,657.

To. all whom t may concern.' Y

Be it known thatv I, JOHN A. Mrrsen, a citizen of the United States, anda resident of Mattapan, Boston, inthe county of 5 Suoll; and State ofMassachusetts, have invented certain new and useful Improvements YinVacuum-Generators, ofwhich the following is a specification.

This invention relates to apparatus for causing a fluidV to flow bymeans ofl the velocity of another fluid escaping from ay contractednozzle, and the invention has particular reference to mechanism of theejector type adapted to massage and syringe purposes, or for Ventilatingpurposes, or the removal of odors, gases, moist air or dust7 or thecleaning` of fabrics; in fact, wherever it is desired to variablyvcontrol the force of the evhaust7 or to reverse the direction of flowthrough the pipe connecting with the chamber around the jet nozzle.

One of the objects of the invention is to provide an apparatus of thischaracter having means whereby the location of the seal which isnecessary to the effective operation of the ejector'will always be at afixed point relatively to the ejector nozzle regardless of thecamountof` pressure orV velocity of the Vactuating Vflow through said nozzle.

Another object is the provision of an improved apparatus Vof this typehaving means for regulating or varying the effect obtained from a Xed orcertain velocity of flow ofthe actuating fluid.

To these ends, the invention consists in the connection and combinationof parts substantially las herein described and claimed.

Of the accompanying drawings, Figure l represents a vertical sectionthrough my improved apparatus in one of its embodiments; Fig. 2represents a section on line 2 2 of Fig. l, with the adjustable memberof the outlet in horizontal position; Figs. 3 and 4 represent a sectionon lille 3 4 of Fig. 2, the dischargeslot beingclosed in Fig. 3V andopen inFig. 4; Figpis a plan view, partly broken out, ofthe outer endportion of the adjustable terminal; Fig.. 6 represents a sectionon line6-6 .of Fig. 51;-F-ig. 7 is a view similar to a portion of'Fig. l,illustrating a modification; Fg is 'a view Srn1n`V to Fiel l, illus.-

vention; Figs. 9, l0, l1 and l2 are detail views of appliances adaptedto enable the' vacuum generator to be put to various uses. Similarreference characters indicate the same or similar parts in all of theviews.

Referring first to Figs. l to 6 inclusive,

a block or carrier 20, of suitable material such as hard rubber, holdsthe partsof the Y apparatus in their relative positions forV useY sothat they cannot be broken apart` orV their operative positionsdisturbed,4 even Whn subjected to rather rough .handling Such Vas stand,basin-or sinkand connected up to a water faucet. Thenozzle 2l at'theinner end of a tube l2 2 is secured, as vby. screwy threading, in aboring ofthe bloclg,` said tube 22y being adapted'to be connected Vbyaflexible hose or pipe 23 to a water faucet, The space in the boringaroundthe nozzle provides a chamber 2tlwith which the air inlet passage25 connects. By means of a short pipe -section 26 and a flexible pipe orhose ,27 ,i the air inlet may be connected to massage or irrigatingappliances such as shown in Figs. 9, 10, A`11 and 12 or to otherterminals acordng to the use to which the apparatus isto be put.

elow the nozzle 2l is a suitableV combining tube 28 and below the latteris a chamber 2,9 with which a lateral passage 30 communicates at a pointabove the end or bottom of said chamber 29 so that the twofluids (theactuatingfluid andthe iIl- Y 1 duced fluid) have their course thoroughlybroken up. To distinguish thev chamber 29 from others, I refer to it thevortex chamber because init the lluids have a whirling motion vthat socompletely intermingles the two' fluids that they @an notY lose theircombination. And-at this Xedk is liable to occur when placed in'awashthepoint of'nal discharge of the combinedV 'Y fluds- In 'other Wards itforms asealt Prevent the lefetfof eingehen-Pressure .power-@ ithe'eiectcr. Y 1

A swivel tube 31, having a flange 32 by means of which a coupling 33connects it to the block 20, is provided with a lateral nipple 34 (Fig.2) on which is fixedly mounted a tube 35. A tube 36 is rotativelymounted on the tube 35 and said tubes are formed with longitudinal slots37 and 38 respectively, said slots being adapted to register when fulland free escape is desired. A disk 39 closes the end of tube 35 and hasa lug or finger piece 40. The rotatable tube 36 has two finger pieces41, 42, preferably shorter than the finger piece 40. By grasping thelinger piece 40 and one or the other of the finger pieces 41, 42, theouter tube can be rotated to open or close the escape passage throughthe slots, or the outer tube can be left with said passage partiallyopen. I/Vhen it is desired to retard or shut of the discharge throughthe slots 37, 38, of the terminal member, the operator simply pressesthe finger piece 41 toward, or to, the position shown in Figs. 1 and 3.As the escape opening through the slots is contracted, it of course,follows that the flow is retarded and the induced current is reduced tolesser force. When the escape opening is closed, all ejector actionceases and then the water or actuating fluid passes up through pipes 26and 27. This enables the apparatus to be employed for such uses asinternal irrigation. The closing of the escape opening as justexplained, causes a reversal of the flow through the passage 26, 27 ofthe ejector apparatus. For instance, by connecting such an implement asshown at 66 in Fig. 12 to the hose 27, then when the escape openingthrough slots 37, 38 is closed, fluid entering through pipe 23 will beconducted to the stomach or other organ to be treated. Then by actuatingthe finger piece 42 to the position shown in Fig. 4, the escape passagewill open, and the apparatus will then immediately cause the withdrawalof the injected uid. In other words, by the construction which enables aquick reversal of flow to be ei'fected through the passage 26, 27, aHuid can be forced into the stomach or other organ to be treated,through said passage, by simply closing the escape or outlet, and thenupon opening the latter the fluid which was so forced into the organwill be withdrawn, due to the reversal of the flow through said passage.

The outer tube may be set in an intermediate position to leave theescape passage partially open if the pressure of the actuating fluid isgreater than needed for the purpose to which the apparatus is being put.Such pressure has no effect upon the tubes'to tend to either enlarge orreduce the escape passage.

The object of swiveling the trap outlet or terminal member is to enableit to be given a horizontal position, or a vertical position at rightangles to the position shown by Fig. 2, or an intermediate position, toregulate the induced flow through passageway 25 if desired, according todifferent degrees of pressure of the actuating iow through nozzle 21.And said member aids in producing the seal below the combining tube 28.It is swung down for light pressures and up for high pressures. Whenswung up, the escape opening through the slots is vertically elongatedso that the level of the combined fluids in this adjustable terminalmember of the trap will automatically vary in height according to thevolume entering said member. A small volume will result in the levelbeing only slightly above the lower end of the slots. If the volumeincreases, the level will rise, but the escape will be freer because ofthe elongation of the slots. More uid will escape as the level rises.But at all times, regardless of variations in volume, the seal will bepreserved. The escape can be restricted at any time by'partial rotationof the outer tube.

The slotted escape opening takes care of variable pressures withoutaffecting the seal. If the outlet were adapted only for a given pressureor volume, then excess pressure of actuating uid would tend to convertthe pressure into a backward one through the passage 25.

In Fig. 7 I illustrate a slightly modified form of swiveled connectionfor the tube 31, said tube simply having a screw-threaded inner end 312Ltting a threaded opening in block 20.

In Fig. 8, the carrier is shown as a circular block 20a, in which ismounted the nozzle 21a and tube 22a, a chamber 24* being located betweenthe nozzle and the combining tube 28a'. The passage 25a has an inletpipe 26a mounted in it. The block also has a chamber 25b closed at itsouter end by a plug 25C. Mounted on the tube 28a is a block 29b having avortex chamber 29a which communicates with a lateral pipe 30a. On thelatter lis secured a nipple 35a, between which and a cap 35b are theslotted tubes 35, 36. This structure is similar in operation to thatshown in Figs. 1 and 2 excepting that the terminal outlet member can notbe swung up parallel with the nozzle. The result, obtained by a verticalpositioning of the outlet member, however, can be reached by allowingthe apparatus to take a position with the nozzle horizontal and thetubes 35, 36 upright.

Fig. 9 shows a pipe or short tube 49 adapted to be connected to theopposite end of hose 27 from that which is secured to pipe 26, said tube49 carrying a massage implement 50 having a flesh manipulating slot 51.Y In Fig. 10 a similar tube 49 is shown, said tube having a massageimplement 53 formed with a cup-shaped recess 54 communicating with tube49 by a passage 55. An aperture 56 communicating with passage 55 may bealternately stopped up and opened by the finger of the user to cause anintermittent manipulation of the iesh against which the cup 54 ispressed. The aperture 56 may be closed by a plug 57.

In Fig. l1, the tube 49 carries a massage implement 60 having anaperture 61 extending to a cup-shaped recess 62, over which is removablysecured a cap 63 having apertures 64. Manipulation of a plurality ofsmall surfaces of the skin may be eected with the cap in place, and of alarger area when the cap is removed.

I claim 1. An apparatus of the character described, comprising anejector' having a terminal member including inner and outer tubes havingslots adapted to register, one of said tubes being rotatable relativelyto the other.

2. An apparatus of the character described, comprising an ejector havinga terminal member including inner and outer tubes having slots adaptedtoregister one of said tubes being rotatable relatively to the other,and means whereby the tubes may be held with their slots registeringwith each other. c

3. An apparatus of the character described, comprising a block, anejector nozzle therein, conduits in said block for an actuating fluidand an induced iiuid, an. i

let leading from said chamber, said outlet.y

being closable to cause a reversal of flow through the pipe and passageleading to said chamber.

In testimony whereof I have aiiXed my signature in presence of twowitnesses.

JOHN A. MITSCH. 1Witnesses: h

A. W. HARRISON, J. M. MURPHY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C. Y Y

